Flexible elbow for connecting pipes



(Nq Model.) C. R. SCHMIDT.

FLEXIBLE ELBOW POR GONNETING PIPES.

No. 561,441. `mme@ June'vz, 1896..

gfm @666,6

v "l, K

llNrrEn Sterns V Parana* triest FLEXIBLE meow Foa CONNECTING Pares.

SPECIFICATION forming pere er Lettere resent No. 561,441, desea June 2, 189e.

Application filed August 16, 1895. Serial No. 559,524. (No model.)

, T @ZZ whom/it may concern.;

Be it known that I, CHARLES R. SCHMIDT, a citizen of the United States, residing at Bal timore, in the State of Maryland, h ave invented certain new and useful Improvements in Flexible Elbows for Connecting Pipes; and

I do hereby declare the following to be a full,4

clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has relation to llexible elbows or sockets for water-closet connections, and has yfor its object the provision of means for producing a'tight joint between the bellelbow or socket, -and has the provision of means.l for preventing thel 'rubber from spreading mouths of the elbow or socketand the Vmetallic. pipes which are coupled `together bythe also for` its object at the ends and for permitting the joint to be ttightened or loosened at will. j Y

The invention consists in the novel struc- 4 ture and combination of parts, as hereinafter described and claimed.`

In the accompanying drawingsFigure l is a vertical central section of the flexible elbow embodying my invention and provided at the ends with the metallic casings or shields by which the form of the bell-mouthsy is pre-l served and lateral spreading prevented. Fig. 2 is a plan View of the same. The elastic elbow A, embodying my invention, is of the usual size and-general contour externally and is preferably made of soft rubber, but may be made of any other soft ma- The ends of the elbow are formed with bell-mouths B B of larger diameter than the bore of the curved portion of the elbow and are molded with one or more internal annular flanges or ridges 0,. theedges of which extend beyond the'inter-` nal wall of the elbow, forming or leaving the extern al flanges openings of somewhat less diameter than the external diameter of the 4pipe D, which the elbow connects. L

E E are metallic thimbles, ferrules, or rings, which are applied to the outside of the bellmouths and are preferably made of spun or stamped metal, shaped to conform to the bellmouths, and having the beads d d embracing of the bell-mouths, as shown in' the drawings. These rings or ferses are cut in these flanges, producing a series of flexible tongues g. normally in the plane at right angles to the This notched flange lies axis of the belllmouthybut when a pipe is e i inserted in the bell-mouth such of the tongues as come in contact with the surface of the pipe areforced inward and .obtain a grip or grasp upon the pipe, which aids in holding the pipe in position and prevents it from being accidentally displaced from the elbow. The central opening of this flange is made oval or elliptical, so as to accommodate pipes of different diameters, the tongues opening inwardly and accommodating themselves to diHerent sizes of pipe without undue .strain and the centeropening tending under the action of the pipe to assume a circular form. vlrVhen the pipe is inserted in one of the bellmouths for the purpose of making a connece tion, the soft ridges or flanges on the interior -of thebell-mouth are-forced inwardly to accommodate the pipe, which is greater in diameter externally than'the internal diameter of the Ilan ges, and these ilanges 'being slightly compressed are caused to tightly hug the pipe and form a perfectly water-tight joint. In

inserting the pipe these flanges easily yield to the pressure and impact of the pipe, but

resist any tendency of the pipe to be withdrawn or displaced lengthwise, as the fricl tion between'the pipe and flanges causes-them to be drawn outwardly with the pipe and diminishes the diameter of their interior open-V ings, so that the act of withdrawing the pipe or pressure exerted from within has the elfect of tightening the llanges upon it and making the joint much tighter.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, isl l. A ilexible connecting-elbow having van internal flanged substantially inexpansible bell end.

2. A ilexible elbow or connection for conneetingmetallic pipes, having 4one or--more Internal annnlariflanges, anda rigid sustain- IOO tially as described.

ing casing, or ferrule,'at the end of the elbow, the latter is inserted in the socket, substan- I 5 substantially as described. tially as described. Y

3. A iiexible elbow or connection for con- 6. The combinationwithapipe connection, necting metallic pipes, having an external of a metallic ring having an oval or elliptical sustaining ring or ferrule, with an internal opening, with fieXiblev-tongnes to .grasp the notched flange, substantially as described. pipe when the latter is inserted in the con 2o 4. 'A flexible connection or elbow for connection, sbstantially as described. necting metallic pipes, provided with a ring, In testimony whereof I'Aaix my signature having tongues which grip the pipe, substanin presence of two witnesses; 5. The combination with a pipe connection, CHARLES R' SCHMIDT' having a flexible socket for the reception of Witnesses:

the pipe of a metallic ring having flexible CHAS. H. SHIPLEY,

"tongues, which clamp or graspthe pipe when GEO. MCCAFFRAY. 

